SE500937C2 - Registers and procedure for cutting tabs in books - Google Patents

Abstract

PCT No. PCT/SE93/00559 Sec. 371 Date Mar. 13, 1995 Sec. 102(e) Date Mar. 13, 1995 PCT Filed Jun. 23, 1993 PCT Pub. No. WO94/02332 PCT Pub. Date Feb. 3, 1994The present invention relates to a method of automatically cutting indexes and an automatic index cutting machine for carrying out the method. The index cutting machine is constructed of number of modules where each module includes a counting arrangement which functions to count a predetermined number of pages automatically for a specific index indentation, and a knife arrangement for cutting this predetermined number of pages. The book is transported between the modules hanging from a transporting arrangement which includes a transporter to hold the book hanging from its spine. Each module counts up to an index indentation and the index indentation is then cut in the knife arrangement, whereafter the book is transported to the next module in which a count is made to the next index indentation and this index indentation is cut. This procedure is repeated module after module.

Description

The mathematical register chopper 10 of the present invention comprises a number (s) of modules 12: 1-2, each module 12: 1-2 consisting of a counting device (compare Fig. 3). and a knife device 28. The register chopper 10 further comprises a storage device 14 intended for books 26 and an input means 16 which feeds a book 26 at a time from the storage device 14 to a transport means 20 included in a transport device 40, which holds the book 26 in the spine. The register cutter 10 further comprises an output device 18 for output of finished books, i.e. books which have received all their tabs carved. The embodiment shown of the record chopper 10 further comprises a reversing means 22 for reversing the conveying direction of the conveying means 20 and a return table 24 for returning conveying means 20 to the beginning of the record chopping 10.

As further shown in Fig. 2, each knife device 28 comprises a knife member 30. The knife member 30 which performs a linear movement may be constituted by a knife blade. The movement is provided by a pneumatic cylinder (not shown) which transmits the movement to the knife member 30 via a link system (not shown). In addition, the knife device 28 comprises a spring-loaded stop (a clamping strip (not shown) which holds the flap at the moment of chopping or cutting. It should be noted that the knife member 30 performs cutting in both directions of the linear movement.

Fig. 3 shows a perspective view of a counting device 32 which is included in the automatic register chopper 10 according to the present invention. The counting device 32 comprises a tongue member 34 which performs a pendulum movement when it is activated and a stick 38 which performs a rotational movement when it is activated. When a book 26 is transported to a counting device 32, the book 26 abuts the tongue member 34 and a blade is sucked by means of a vacuum through a small hole 36 in the tongue member 34. When a control unit (not shown) gives a start signal, both the tongue member 34 and the pin 38 are mechanically actuated via levers from one and the same engine. When the tongue member 34 performs its pendulum movement, the blade sucked by the vacuum is actuated so that it bends away from the other blades and thus creates a space for the pin 38 to come between the blades. The pin 38 then takes the sucked-in blade up to the back of the tongue member 34 and a new blade is sucked onto the tongue member 34. In the vacuum system there is also a valve (not shown) which closes and breaks depending on the current vacuum . It detects if a blade is being sucked onto the tongue member 34 and can thus acknowledge that a blade has been counted. The above-mentioned control unit controls the number of pages that each counting device 32 must count, i.e. has many pages to be included in each tab. The predetermined number of pages for each specific tab is fed to the control unit via an input means (not shown).

The automatic record chopper 10 according to the present invention operates as follows: One book at a time is conveyed by the input means 16 from the storage device 14 to the transport means 20 which holds and holds the book in the book spine - the book is transported in hanging condition with the transport means 20 to the first module 12: 1 the lower cover page is folded down under a guide by suction feed - the book is then transported to the calculator 32 in the first module 12: 1 which counts the pre-programmed number of pages, folds them down under a guide - the book is transported to the knife device 28 where the flap is cut and folded under the guide - the book is transported to the next module 12: 2 where the next tab is counted and chopped, etc. module by module.

The books are followed in a smooth flow because all counting devices 32 and the knife device are simultaneously operating with one book. A machine for thirty tabs consists of thirty modules. In module 1, tab 1 is made and in module 30, tab 30 is made. It is also possible to produce a 30-tab book in a machine with 15 modules, but then the production speed is halved because the book must be run through twice.

The above-described embodiment of the present invention is only an example of how the invention can be realized and does not constitute a limitation of the invention, the scope of which is stated in the claims.

Claims (6)

10 15 20 25 30 500 937 4 PATENT REQUIREMENTS A register chopper (10) for chopping fl ikar in books (26), characterized in that it comprises a number of modules (12: 12: n), each of which comprises a counting device (32) for counting of a predetermined number of pages for a module specific to the module and a knife device (28) for chopping the predetermined number of pages for a module specific to the module, and that the register chopper (10) further comprises a number of transport means (20) for holding the books (26) in the book spines, the books (26) being transported suspended between the modules. A record chopper (10) according to claim 1, characterized in that it further comprises a storage device (14) for storing books, an input means (16) for inputting a book (26) from the storage device (14) to the transport means (20). ) and a release device (18) for dispensing ready-made books (26). Register chopper (10) according to claim 2, characterized in that it further comprises a control means for controlling the counting devices (32) so that each counting device (32) counts a predetermined number of pages entered via a programming unit connected to the control means. for a specific fl ik. Register chopper (10) according to claim 3, characterized in that each counting device (32) comprises a halved (36) tongue means (34) which via the control means and a motor performs a pendulum movement and a pin (38) which via the control means and the motor performs a rotational movement, a blade of the book (26) being sucked against the tongue member (34) via the hole (36) in the same and vacuum, the two movements cooperating so that the counted blades are distinguished from non-counted blades by the tongue member (34). Registry chopper (10) according to claim 4, characterized in that each knife device (28) comprises a spring-loaded stop for holding the sides to be chopped and a linear movable knife member (30) which is driven via a link system by one in the knife device ( 28) Inlet pneumatic cylinder. A method for register-chopping books with a register-chopper (10) comprising a number (n) of modules (12: 1-12), each of which comprises a counting device (32) for counting a predetermined number of pages for a module-specific fl ik and a knife device (28) for chopping a number of pages predetermined for the module for the specific fl ik, which method is characterized by the steps of: a) feeding a book (26) into a register chopper (10) by means of an input means (16); ) included conveying means (20), which holds the book (26) in the book spine; b) folding down a cover side by means of suction feed under a tongue member (34) included in the counting device (32); c) transporting the book (26) to the first module (12: 1) by means of the transport means (20); d) by means of the counting device (32) counting a first predetermined number of sides corresponding to the first fl which is folded down under the tongue means (34); e) transporting the load yoke to the knife device (28) in the module (12: 1) for chopping the first fl yoke; f) transporting the book (26) to the next module (12: 2-12), whereby steps d) and e) above are repeated a total of n number of times.